Answer:
the answer should be 7a^3-4a^2-2a-87
Answer:

Step-by-step explanation:

(7 1/2) / (3/4) =
(15/2) / (3/4) =
15/2 * 4/3 =
30/3 =
10 <== there will be 10 three-fourth ft pieces
Answer:
y=30
Step-by-step explanation:
<span><span><span><span><span><span>(<span>x+2</span>)</span><span>(<span>x<span>−2</span></span>)</span></span><span>(<span>x+1</span>)</span></span><span>(<span>x<span>−1</span></span>)</span></span></span><span>=0</span></span> true. x=−2,2,−1,1
hope this helps